package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author BLL
 * @create 2020/4/15 19:51
 */
@Service
public class PaymentService {
    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"   paymentInfo_OK,id："+id+"\t"+"O(∩_∩)O哈哈~";
    }
/**
 * http://localhost:8001/payment/hystrix/timeout/31
 * @HystrixCommand报异常后如何处理：
 * 一旦调用服务方法失败并抛出了错误信息后，
 * 会自动调用@HystrixCommand标注好的fallbackMethod调用类中的指定方法
 *
 * @param id
 * @return
 */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            //设置这个线程的超时时间是3s，3s内是正常的业务逻辑，超过3s调用fallbackMethod指定的方法进行处理
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })

    public String paymentInfo_Timeout(Integer id){
        int timeNumber = 5;
        try{
            TimeUnit.SECONDS.sleep(timeNumber);
        }catch (InterruptedException e){
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()+"   paymentInfo_Timeout,id："+id+"\t"+"O(∩_∩)O哈哈~"+"   耗时(秒)："+timeNumber;
    }
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()+"   系统繁忙，请稍后再试,id："+id+"\t"+"o(╥﹏╥)o";
    }
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties ={
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//
    } )
  public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id<0){
            throw  new RuntimeException("******.id不能为负数！");
        }
        String serialNumber= IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号"+serialNumber;
  }
  public String paymentCircuitBreaker_fallback(@PathVariable("id")Integer id){
        return "id 不能为负数，请稍后再重试，/o(╥﹏╥)o/~~id:"+id;
    }
}
